A5064972907- Rice Cultivation and Yield Improvement
- Plant Micronutrient Interactions and Effects
- GABA and Rice Research
- Genetic Mapping and Diversity in Plants and Animals
- Plant responses to water stress
- Agriculture and Rural Development Research
- Peanut Plant Research Studies
- Agricultural pest management studies
- Plant Stress Responses and Tolerance
- Agricultural Science and Fertilization
- Plant-Microbe Interactions and Immunity
- Plant nutrient uptake and metabolism
- Phytase and its Applications
- Insect Resistance and Genetics
- Seed Germination and Physiology
- Banana Cultivation and Research
- Legume Nitrogen Fixing Symbiosis
- Insect Pest Control Strategies
- Phosphorus and nutrient management
- Sunflower and Safflower Cultivation
- Soil and Water Nutrient Dynamics
- Plant pathogens and resistance mechanisms
- Genetic diversity and population structure
- Oil Palm Production and Sustainability
- Nitrogen and Sulfur Effects on Brassica
Institut Sénégalais de Recherches Agricoles
2023-2024
Centre d'Etude Regional pour l'Amelioration de l'Adaptation a la Secheresse
2023
Sokoine University of Agriculture
2022
Africa Rice Center
2010-2020
Université Paris Cité
2012
Université Paris-Est Créteil
2004-2007
Institut de Recherche pour le Développement
2007
Université Toulouse III - Paul Sabatier
2006
Centre National de la Recherche Scientifique
2006
The cellulose binding elicitor lectin (CBEL) from Phytophthora parasitica nicotianae contains two domains (CBDs) belonging to the Carbohydrate Binding Module1 family, which is found almost exclusively in fungi. mechanism by CBEL perceived host plant remains unknown. role of CBDs eliciting activity was investigated using modified versions protein produced Escherichia coli or synthesized planta through potato virus X expression system. Recombinant E. elicited necrotic lesions and defense gene...
Iron (Fe) is a fundamental element involved in various plant metabolic processes. However, when Fe uptake excessive, it becomes toxic to the and disrupts cellular homeostasis. The aim of this study was determine physiological biochemical mechanisms underlying tolerance toxicity contrasting rice varieties adapted African environments. Four (CK801 Suakoko 8 (tolerant), Supa IR64 (sensitive)) selected from our previous work were analysed more detail, first part reports morphological, responses...
:In sub-Saharan Africa, the demand for higher rice production continues to grow rapidly. Although there is a huge potential increasing through expansion of cultivation area in wetlands, iron (Fe) toxicity tends occur and consequently results low yield. Development deployment varieties tolerant Fe one practical options overcome this constraint. Several have been developed conventional breeding but progress has generally slow mainly due large genotype × environment interaction field...
We have developed allele-specific markers for molecular breeding to transfer the PSTOL1 gene from Kasalath African mega-varieties, including NERICAs, improve their tolerance P-deficient soil. The deficiency of phosphorus (P) in soil is a major problem Sub-Saharan Africa due general nutrient depletion and presence P-fixing soils. Developing rice cultivars with enhanced P efficiency would, therefore, represent sustainable strategy livelihood resource-poor farmers. Recently Pup1 locus, QTL...
Iron nutrition in plants is highly regulated order to supply amounts sufficient for optimal growth while preventing deleterious effects. In response iron deficiency, induce either reduction-based or chelation-based mechanisms enhance uptake from the soil. Major physiological traits and genes involved these have been fairly well described model like Arabidopsis thaliana (L. Heynh.) rice (Oryza sativa L.). However, rice, toxicity presents a major challenge worldwide causes yield reductions...
The objective of this study was to assess the reliability pot-based screening method for iron (Fe) toxicity tolerance in rice using soils from hot spots. Five lowland varieties with known reaction Fe were grown pots a screen house three seasons. Fe-toxic two spot fields – Edozighi, Nigeria and Niaouli, Benin used soil Africa Rice Center (AfricaRice) experimental farm, Cotonou, included as control. Leaf bronzing score (LBS) determined at different stages, grain yield maturity. Heritability...
ABSTRACT Lowland rice ( Oryza sativa L.) is often affected by iron toxicity, which may lead to yield losses. One important constraint in the study of inheritance resistance strategies this stress inconsistency gene expression across different environments. This aimed determine stability quantitative trait loci (QTL) several Quantitative mapping for traits related mechanisms had been previously performed using 164 recombinant inbred lines derived from ‘Azucena’ and ‘IR64’ screened hydroponics...
Iron (Fe) toxicity is recognized as one of the most widely spread soil constraints for rice production especially in West Africa. Oryza glaberrima cultivated species that originated from Africa well-adapted to its growing ecologies. The aim this study was identify promising O. accessions tolerant Fe 2106 held at AfricaRice gene bank. screenings were conducted over a four-year period and involved evaluating entries under Fe-toxic field conditions Africa, selecting good yielding repeating...
Drought and low P availability are major limitations for rainfed rice (Oryza spp.) production. Root anatomy plays a key role in resource acquisition tolerance to water limitations. anatomical responses of three contrasting varieties combinations different levels (deficient non-limiting) (water stress submergence) were evaluated two pot trials. was the dominant growth-limiting factor, but root more prominent than availability. Cortical cell file number xylem vessels decreased as response...
More than 60% of phosphorus (P) taken up by rice (Oryza spp) is accumulated in the grains at harvest and hence exported from fields, leading to a continuous removal P. If P removed fields not replaced inputs then soil stocks decline, with consequences for subsequent crops. Breeding genotypes low concentration could be strategy reduce maintenance fertilizer needs slow depletion input systems. This study aimed assess variation grain concentrations among across diverse environments evaluate...
Species misclassification (misidentification) and handling errors have been frequently reported in various plant species conserved at diverse gene banks, which could restrict use of germplasm for correct purpose. The objectives the present study were to (i) determine extent genotyping error (reproducibility) on DArTseq-based single-nucleotide polymorphisms (SNPs); (ii) proportion misclassified accessions across 3134 samples representing three African rice complex (Oryza glaberrima, O....
Adoption of rice varieties that perform well under high iron-associated (HIA) stress environments can enhance production in West Africa. This study reports the genetic characterization 323 accessions and breeding lines cultivated Africa using genotyping-by-sequencing their phenotypic response to HIA treatments hydroponic solution (1500 mg l-1 FeSO4·7H2O) hot-spot fields. The germplasm consisted four subpopulations: Oryza glaberrima (14%), O. sativa-japonica (7%), sativa-indica Group 1 (45%),...
To enhance breeding efficiency for iron (Fe) toxicity tolerance and boost lowland rice production in sub-Saharan Africa, we have characterised the morphological, physiological biochemical responses of contrasting varieties to excess iron. Here, report capacity four (CK801 Suakoko8 (tolerant), Supa IR64 (sensitive)) oxidise rhizosphere control iron-induced oxidative stress. The experiments were conducted hydroponic conditions using modified Magnavaca nutrient solution 300 ppm ferrous (Fe2+)...
Two Outstanding Oryza glaberrima (2n = 24, AA) varieties TOG5681 and TOG5674 were used as male donor parents with IR64, the high-yielding improved Asian rice variety recurrent female parent by International Rice Research Institute (IRRI) to develop 18 BC3F1 interspecific lowland progenies. The proportion of parental genomic contribution extent genetic differences among these lines assessing using 36 microsatellites markers. average that IR64 within their 12 derived from IR64xTOG5681 cross...
New Rice(s) for Africa (NERICA) are high yielding rice varieties mostly cultivated in Sub-Saharan and developed by the Rice Center. This study is aimed at investigating proportion of introgression parental genomic contribution 60 lowland NERICA establishment molecular profiling. Agro-morphological data from 17 characteristics was recorded significant (p<0.05) to (p<0.0001) differences were obtained with leaf length width, plant height maturity, days heading, primary secondary branching...
Rice is one of the major staple foods in Burkina Faso and in-country production covers about 60% demand 40% met from imports. The immense potential lowlands for durable intensification rice cropping have not been realised due to biotic abiotic constraints. Hence, there an urgent need increase improve order meet up with high demand. To demand, research program evaluated intra interspecific lowland progenies 2002 2003. aim study introduce new NERICAs through a participatory approach identify...
Drought is a multiform constraint expressing at different plant organisation levels. It recognised as the first factor limiting agriculture production in world. The Sahel subtropical regions were most exposed to devasting effects of recent climate change. A state knowledge referring responses drought fundamental initial step any program selection. This review concerns more particularly groundnut (Arachis hypogaea L.), which very common legume areas. Critical evaluations traits relevant...